Improvement in grain-separators



PATENTED OCT. 20,1863.

A. HUNTER.

GRAIN SEPARATOB.

2 SHEETSBHEBT 1.

7fi'ifzesses PETERS co, mmuumon wAsumc-mu, 0 cv PATENTED OCT. 20, 1863.

A. HUNTER.

GRAIN SEPARATOR.

2 SHEETSSHBBT 2.

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T Noams warms co.vunrm mo WASHANGTON n c UNITED STATES ANDREW HUNTER. OF SOLANO COUNTY, CALIFORNIA.

IMPROVEMENT IN GRAlN-SEPAR ATCRS.

Specification forming part of Letters Patent No. 40,340, dated October 20, 1863.

reference being had to the annexed drawings,

making a part of this specification,inwh,ich-

Figure 1 represents a perspective view of said grain-separator. Fig. 2 represents alongitudinal vertical section througl thc same. Fig. 3 represents a detached vicw, hereinafter to be ret'erredto. i

- To enable others skilled in the art to make and use my invention, 1 will proceed to describe its construction and-operation.

A represents the frame of the machine, to which the inclined vibrating shoe-sB are hun g by means of the pivoted hangers O D. The shoes are provided with screens E FG H I K, which are arranged as represented in Fig. 2, causing the larger grain to pass over. the screens and-over the lower ed ge of them to the succeeding screens, while the smaller grain, chaii', and seed pass through said screens. The shoes B are operated by means of .pitmen t, which are secured to cranks sand to the heads L of the ha'ngers D, and the length ot'- thevibrations of said shoes may be adjustedby setting the heads L higher or lower on said hangers, they being provided for said purpose with holes a;

B representsanother pair. of shoes, which are secured to the hangersD, and which are supported by the hinged braces They are thus simultaneously vibrated with the shoes B by the action of the crank-shaft and'pitmen t, and are inclined in a direction opposite to that of the shoes B, andare provided with screensM for the separation of the smaller.

per V.

over the unperforated parts of the succeeding screens F (.l- H I K and eventually drop on the plate b, whence it passes into the hopper O. Thegrain, which is of the size of the holes in the above-stated screens passes successively through the screens E F G H I K, passes eventually down to the solid plate P, down said plate and through the aperature d, down upon the screen M ,on which the second separation takes place, the grain passing over it and downward. The seed and chafi pass through the screen M and down the solid plate' Q. The lower end of the shoes B, together with the part of the frame, are represented in a perspective view at Fig.3. It will be seen on said figure that oblique. strips R are secured to the top of the screens M, and other strips, T, are secured in a reversed position between plate Q and screen M, so as to fill up the entire space betweeng'them, When the grain passes down screens M, the strips R- guide it so as to drop it into the hopper U, while the smaller seed and chaff, which pass down the plates Q, are guided by the strips T so as to drop into the boxes V, and thus. by this arra-ngementl am enabled .to obtain a treble separation of grain, and if the mixture of the grain is such as to require a still further separation an additional screen, with inclined guide pieces or strips, may be used.

fHaving thus fully described the nature of m y invention, what I, claim herein as new, and desire to secure by Letters Patent, is-

1. The arrangement of the screens E F G H I K with the plate P, for the purpose of more t-h roughly separating the grain to be I cleaned from grain of larger size, substantially in the manner and for the purpose described. 2. Affixing to the lower shoes the strips R and similar strips, T, in a reversed position on the bottom of the shoe under the screen M, for the purpose of guiding the grain into the hopper U and chaff or small seed into the hop- 3. The arrangement in grain-cleaning machines of trays or shoes in two or more sets, in combination with the reversed cranks and connecting rods, in the manner and for the purposes set forth.

. I ANDREW. HUNTER.

Witnesses:

WM. L. DUNCAN, D. 0. McCAR'rnv. 

